I always thought it was funny to see all these arguments over cam, compression, heads, this and that with the engine. Mopar KNEW the engine really didn't matter a whole lot. The CAR is what makes a fast race car. Pick an engine section and look at the level of detail there compared to the level of detail in the chassis manual. There's so much more detail in the chassis manual, it's mind blowing. I think that's why Mopar came out with the engine recipes. Could you improve on them? Well yeah. But why? Pick how fast you wanna go, pick out that engine recipe, build the car per the chassis manual and you're there. Kinda stupid simple.